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Alex73 [517]
3 years ago
13

The chance of women getting breast cancer is 1 out of 8. at this rate how many women in a classroom of 32 women would be expecte

d to come down with breat cancer in her lifetime?
Mathematics
1 answer:
stepladder [879]3 years ago
7 0

The general probability is 1/8. For it to be applicable to 32 women, one must multiply 4 to the numerator and denominator.

The final probability would be (1x4)/(8x4) which is 4/32.

Therefore, 4 women would be the answer.

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A certain insecticide kills 60% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide i
Vilka [71]

Answer:

The probability that exactly 10 insects will die

                     P( X = 10 ) = 0.06385        

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given a certain insecticide kills 60% of all insects in laboratory experiments

Given proportion  p = 0.60

                           q = 1 - 0.60 = 0.40

Given sample size 'n' = 12

<u><em>Step(ii):</em></u>-

Let "X' be the random variable of binomial distribution

                              P(X=r) = n_{C_{r} } p^{r} q^{n-r}

The probability that exactly 10 insects will die

                              P(X=10) = 12_{C_{10} } (0.60)^{10} (0.40)^{12-10}

                           

                          n_{C_{r} } = \frac{n!}{(n-r)!r!} = \frac{12!}{(12-10)!10!} = 66

                          P(X=10) = 66 X (0.60)^{10} (0.40)^{2} = 0.06385

<u><em>Final answer:</em></u>-

The probability that exactly 10 insects will die

                     P( X = 10 ) = 0.06385        

4 0
3 years ago
Solve this expression given below:
Reika [66]

Answer:

2.9989054e+53

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the derivative of the inverse of the function y=(2/(x+3))
natima [27]
(Y+8x)b(7+8x)9(63y•573)
4 0
3 years ago
Can someone help me with number 2 plzzzz!!!!
Ulleksa [173]

Answer:

Is

Step-by-step explanation:

Correct answer is A I think

5 0
2 years ago
Kelly combines 6.54 ounces of strawberries with 6.09 ounces of blueberries to make fruit bowls.She pours the fruit equally into
Talja [164]

Answer:

3.65 ounces in each bowl

Step-by-step explanation:

Strawberry=6.54 ounces

Blueberry=6.09 ounces

If Kelly combines the two fruits to make fruits bowls

Then,

6.54 ounces of strawberry + 6.09 ounces of blueberry=12.63 ounces of fruits.

She pours the fruits equally in each bowl and has a leftover of 1.68 ounces.

Let quantity in each bowl = x

There are 3 bowls

Total quantity in three bowls=3x

Leftover=1.68

Total fruits = 12.63

We have the equation

3x+1.68=12.63

Subtract 1.68 from both sides

3x=12.63-1.68

3x= 10.95

Divide both sides by 3

x=10.95/3

x=3.65

8 0
3 years ago
Read 2 more answers
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